某些代码

https://github.com/libgdx/libgdx/blob/master/tests/gdx-tests/src/com/badlogic/gdx/tests/ViewportTest1.java

https://github.com/libgdx/libgdx/blob/master/tests/gdx-tests/src/com/badlogic/gdx/tests/ViewportTest2.java

https://github.com/libgdx/libgdx/blob/master/tests/gdx-tests/src/com/badlogic/gdx/tests/ViewportTest3.java

和文档 https://github.com/libgdx/libgdx/wiki/Viewports

运行测试，您将了解其工作方式.

Run the tests and you will understand the way it works.